An abstract interface to highly-parameterizable queues/deques.
Background: There exists a feature space for queues that extends between:
simple, single-ended, non-concurrent, bounded queues
double-ended, threadsafe, growable queues
... with important points inbetween (such as the queues used for work-stealing).
This package includes an interface for Deques that allows the programmer to use a single API for all of the above, while using the type-system to select an efficient implementation given the requirements (using type families).
This package also includes a simple reference implementation based